From 9/11 conspiracy theorists and UFO obsessives tothe cult of Ayn Rand and Birthercrusaders, America is suffering from an explosion in post-rationalistideological movements. In Among the Truthers, journalist Jonathan Kay offers a thoughtful and sobering look at how socialnetworking and Web-based video sharing have engendered a flourishing of new conspiracism. Kay details the sociological profiles of tenbrands of modern conspiracists--the Failed...